////////////////////////////////////////////////////////////////////////// // Mapper116 CartSaint : 幽遊AV強列伝 // ////////////////////////////////////////////////////////////////////////// using static VirtualNes.MMU; using static VirtualNes.Core.CPU; using INT = System.Int32; using BYTE = System.Byte; using System; using Codice.CM.Client.Differences; namespace VirtualNes.Core { public class Mapper116 : Mapper { BYTE[] reg = new byte[8]; BYTE prg0, prg1, prg2, prg3; BYTE prg0L, prg1L; BYTE chr0, chr1, chr2, chr3, chr4, chr5, chr6, chr7; BYTE irq_enable; INT irq_counter; BYTE irq_latch; BYTE ExPrgSwitch; BYTE ExChrSwitch; public Mapper116(NES parent) : base(parent) { } public override void Reset() { for (INT i = 0; i < 8; i++) { reg[i] = 0x00; } prg0 = prg0L = 0; prg1 = prg1L = 1; prg2 = (byte)(PROM_8K_SIZE - 2); prg3 = (byte)(PROM_8K_SIZE - 1); ExPrgSwitch = 0; ExChrSwitch = 0; SetBank_CPU(); if (VROM_1K_SIZE != 0) { chr0 = 0; chr1 = 1; chr2 = 2; chr3 = 3; chr4 = 4; chr5 = 5; chr6 = 6; chr7 = 7; SetBank_PPU(); } else { chr0 = chr2 = chr4 = chr5 = chr6 = chr7 = 0; chr1 = chr3 = 1; } irq_enable = 0; // Disable irq_counter = 0; irq_latch = 0; // nes.SetFrameIRQmode( FALSE ); } //void Mapper116::WriteLow(WORD addr, BYTE data) public override void WriteLow(ushort addr, byte data) { DEBUGOUT("MPRWR A=%04X D=%02X L=%3d CYC=%d\n", addr & 0xFFFF, data & 0xFF, nes.GetScanline(), nes.cpu.GetTotalCycles()); if ((addr & 0x4100) == 0x4100) { ExChrSwitch = data; SetBank_PPU(); } } //void Mapper116::Write(WORD addr, BYTE data) public override void Write(ushort addr, byte data) { DEBUGOUT("MPRWR A=%04X D=%02X L=%3d CYC=%d\n", addr & 0xFFFF, data & 0xFF, nes.GetScanline(), nes.cpu.GetTotalCycles()); switch (addr & 0xE001) { case 0x8000: reg[0] = data; SetBank_CPU(); SetBank_PPU(); break; case 0x8001: reg[1] = data; switch (reg[0] & 0x07) { case 0x00: chr0 = (byte)(data & 0xFE); chr1 = (byte)(chr0 + 1); SetBank_PPU(); break; case 0x01: chr2 = (byte)(data & 0xFE); chr3 = (byte)(chr2 + 1); SetBank_PPU(); break; case 0x02: chr4 = data; SetBank_PPU(); break; case 0x03: chr5 = data; SetBank_PPU(); break; case 0x04: chr6 = data; SetBank_PPU(); break; case 0x05: chr7 = data; SetBank_PPU(); break; case 0x06: prg0 = data; SetBank_CPU(); break; case 0x07: prg1 = data; SetBank_CPU(); break; } break; case 0xA000: reg[2] = data; if (!nes.rom.Is4SCREEN()) { if ((data & 0x01) != 0) SetVRAM_Mirror(VRAM_HMIRROR); else SetVRAM_Mirror(VRAM_VMIRROR); } break; case 0xA001: reg[3] = data; break; case 0xC000: reg[4] = data; irq_counter = data; // irq_enable = 0xFF; break; case 0xC001: reg[5] = data; irq_latch = data; break; case 0xE000: reg[6] = data; irq_counter = irq_latch; irq_enable = 0; nes.cpu.ClrIRQ(IRQ_MAPPER); break; case 0xE001: reg[7] = data; irq_enable = 0xFF; break; } } //void Mapper116::HSync(INT scanline) public override void HSync(int scanline) { if ((scanline >= 0 && scanline <= 239)) { if (irq_counter <= 0) { if (irq_enable != 0) { // nes.cpu.IRQ_NotPending(); nes.cpu.SetIRQ(IRQ_MAPPER); #if FALSE //0 DEBUGOUT( "IRQ L=%3d\n", scanline ); { LPBYTE lpScn = nes.ppu.GetScreenPtr(); lpScn = lpScn+(256+16)*scanline; for( INT i = 0; i < 64; i++ ) { lpScn[i] = 22; } } #endif return; } } if (nes.ppu.IsDispON()) { irq_counter--; } } #if FALSE //0 if( (scanline >= 0 && scanline <= 239) ) { if( nes.ppu.IsDispON() ) { if( irq_enable ) { if( !(irq_counter--) ) { // irq_counter = irq_latch; nes.cpu.IRQ_NotPending(); } } } } #endif } void SetBank_CPU() { if ((reg[0] & 0x40) != 0) { SetPROM_32K_Bank(PROM_8K_SIZE - 2, prg1, prg0, PROM_8K_SIZE - 1); } else { SetPROM_32K_Bank(prg0, prg1, PROM_8K_SIZE - 2, PROM_8K_SIZE - 1); } } void SetBank_PPU() { if (VROM_1K_SIZE != 0) { if ((ExChrSwitch & 0x04) != 0) { INT chrbank = 256; SetVROM_8K_Bank(chrbank + chr4, chrbank + chr5, chrbank + chr6, chrbank + chr7, chr0, chr1, chr2, chr3); } else { INT chrbank = 0; SetVROM_8K_Bank(chrbank + chr4, chrbank + chr5, chrbank + chr6, chrbank + chr7, chr0, chr1, chr2, chr3); } #if FALSE //0 if( reg[0] & 0x80 ) { // SetVROM_8K_Bank( chrbank+chr4, chrbank+chr5, // chrbank+chr6, chrbank+chr7, // chrbank+chr0, chrbank+chr1, // chrbank+chr2, chrbank+chr3 ); SetVROM_8K_Bank( chrbank+chr4, chrbank+chr5, chrbank+chr6, chrbank+chr7, chr0, chr1, chr2, chr3 ); } else { SetVROM_8K_Bank( chr0, chr1, chr2, chr3, chrbank+chr4, chrbank+chr5, chrbank+chr6, chrbank+chr7 ); } #endif } } //void Mapper116::SaveState(LPBYTE p) public override void SaveState(byte[] p) { for (INT i = 0; i < 8; i++) { p[i] = reg[i]; } p[8] = prg0; p[9] = prg1; p[10] = prg2; p[11] = prg3; p[12] = chr0; p[13] = chr1; p[14] = chr2; p[15] = chr3; p[16] = chr4; p[17] = chr5; p[18] = chr6; p[19] = chr7; p[20] = irq_enable; p[21] = (byte)irq_counter; p[22] = irq_latch; p[23] = ExPrgSwitch; p[24] = prg0L; p[25] = prg1L; p[26] = ExChrSwitch; } //void Mapper116::LoadState(LPBYTE p) public override void LoadState(byte[] p) { for (INT i = 0; i < 8; i++) { reg[i] = p[i]; } prg0 = p[8]; prg1 = p[9]; prg2 = p[10]; prg3 = p[11]; chr0 = p[12]; chr1 = p[13]; chr2 = p[14]; chr3 = p[15]; chr4 = p[16]; chr5 = p[17]; chr6 = p[18]; chr7 = p[19]; irq_enable = p[20]; irq_counter = p[21]; irq_latch = p[22]; ExPrgSwitch = p[23]; prg0L = p[24]; prg1L = p[25]; ExChrSwitch = p[26]; } public override bool IsStateSave() { return true; } } }